Replacement iRobot Roomba 770 Filters, 3-Arm Side Brush - Kit Includes for iRobot 10 Filters, 5 3-Arm Side Brush Replacement iRobot Roomba 770 Filters, 3-Arm Side Brush The Brushes allows your Roomba to reach deeper into the carpet for a more thorough cleaning Replace filters and side brush every 2 to 3 months for best performance For Newer Version of the Roomba 780. Please check your Roomba to make sure you are purchasing the correct parts On Sale for a Limited Time!